{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381084983",
    "entityType": "User",
    "nonce": "0x19c9cdcc45b012812eb41e4ab654253c61bc7df2d17c0159ffee3c0975bae07a",
    "signature": "0x1d2c8f1149cbd5e0a7cbb9e89d95a228a10c15ad37de8720703f1708eb2b55f1561c35a4aed2d2efbca9b46558358efaa605666aeb9e24a29f44eba82f9cbd271c",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}